Reassemble a concatenated message segmented with the sar_* TLVs (#91)

* Regression tests for inbound sar_* concatenation

* Reassemble a concatenated message segmented with the sar_* TLVs

* Record the sar_* fix in the jasmin and Java-client findings

* Name the sar_* TLVs in the refusal, and separate group keys the addresses cannot forge

* Name the field a refused segment got wrong, and key groups on a separator no address holds

* Bound the new session tests, and derive Concat from the UDH fields

src/index.ts

@@ -31,6 +31,7 @@ export {
 
 export { dlrFromPdu, parseReceipt, receiptCodes } from './dlr.ts';
 export { messageOctets } from './message-body.ts';
+export { concatOf } from './concat.ts';
 export { concatInfo } from './udh.ts';
 export { PduFramer } from './pdu-framer.ts';
 export { uuidv7 } from './uuid.ts';
@@ -38,6 +39,7 @@ export { uuidv7 } from './uuid.ts';
 export type { BindType, ClientOptions } from './client.ts';
 export type { Dlr, Receipt } from './dlr.ts';
 export type { SendDlrResult, SendRespOptions, Sms, SmsInput } from './sms.ts';
+export type { Concat } from './concat.ts';
 export type { ConcatInfo } from './udh.ts';
 export type { Result, VoidResult } from './result.ts';
 export type { SmppLog } from './log.ts';